Home / 20,406,212.24-28,162,561.96-15,240,605.76

Finding the Fourth Proportional to 20,406,212.24, 28,162,561.96 and 15,240,605.76

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Solution

The fourth proportional to 20,406,212.24, 28,162,561.96 and 15,240,605.76 is: 21,033,521.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,406,212.24 : 28,162,561.96 = 15,240,605.76 : x
  2. Step 2: Convert to fraction form
    20,406,212.24/28,162,561.96 = 15,240,605.76/x
  3. Step 3: Cross multiply
    20,406,212.24x = 28,162,561.96 × 15,240,605.76
  4. Step 4: Simplify right side
    20,406,212.24x = 429,214,504,023,932.88
  5. Step 5: Solve for x
    x = 429,214,504,023,932.88/20,406,212.24
  6. Step 6: Final answer
    x = 21,033,521.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.